# 百思文库 vs AI写作神器Pro

The clearest difference is device support: AI写作神器Pro at 2 against 百思文库's —. On price, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. 百思文库 sells 3 in-app purchases, starting at $2.99 per 7 days and AI写作神器Pro sells 4 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | 百思文库 | AI写作神器Pro |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | — | No |
| Update frequency | — | Every 5 weeks |
| Size | 16 MB | 42 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | — | **iPhone, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [敏飞 任](https://appshunter.io/developer/1733484219) | [YYDS Limited](https://appshunter.io/developer/1582146683) |

## What reviewers say

### 百思文库

[App page](https://appshunter.io/ios/app/ai/id6502648145)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 高级会员 | $2.99 | per 7 days |
| 高级会员 | $3.99 | per month |
| 高级会员 | $24.99 | per year |


### AI写作神器Pro

[App page](https://appshunter.io/ios/app/aipro-and/id6736682283)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AI写作Pro周会员 | $3.99 | per 7 days |
| AI写作Pro月会员 | $4.99 | per month |
| AI写作Pro季会员 | $9.99 | per 3 months |
| AI写作Pro年会员 | $17.99 | per year |


## Frequently asked questions

### Is 百思文库 free?

百思文库 is free to download, with in-app purchases available.

### Is AI写作神器Pro free?

AI写作神器Pro is free to download, with in-app purchases available.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*